<template>
  <div class="login-container">
    <!-- 登录表单 -->
    <el-form ref="loginForm" :model="loginForm" :rules="loginRules" class="login-form" auto-complete="on" label-position="left">
      <div class="title-container">
        <div class="title-cn">管理服务系统</div>
        <div class="title-en">Management service system</div>
      </div>
      <!-- 用户名 -->
      <el-form-item prop="username">
        <span class="svg-container">
          <svg-icon icon-class="user" />
        </span>
        <el-input ref="username" v-model="loginForm.username" placeholder="Username" name="username" type="text" tabindex="1" auto-complete="on" />
      </el-form-item>
      <!-- 密码 -->
      <el-form-item prop="password">
        <span class="svg-container">
          <svg-icon icon-class="password" />
        </span>
        <el-input
          :key="passwordType"
          ref="password"
          v-model="loginForm.password"
          :type="passwordType"
          placeholder="Password"
          name="password"
          tabindex="2"
          auto-complete="on"
          @keyup.enter.native="handleLogin"
        />
        <span class="show-pwd" @click="showPwd">
          <svg-icon :icon-class="passwordType === 'password' ? 'eye' : 'eye-open'" />
        </span>
      </el-form-item>
      <!-- 记住密码 -->
      <el-form-item class="switch-userid">
        <el-switch v-model="loginForm.value" active-text="记住密码" active-color="#13ce66" inactive-color="#ff4949" style="float: right" />
      </el-form-item>
      <!-- 登录按钮 -->
      <el-button :loading="loading" class="login-bth" type="primary" style="width: 100%; margin-bottom: 30px" @click.native.prevent="handleLogin">登录</el-button>
      <!-- 提示 -->
      <div class="tips">
        <span style="margin-right: 20px">username: admin</span>
        <span>password: admin</span>
      </div>
    </el-form>
  </div>
</template>

<script>
import { validateUsername, validatePassword } from '@/utils/validate'
import { mapActions } from 'vuex'

export default {
  data() {
    return {
      loginForm: {
        username: 'admin',
        password: 'admin',
        value: false
      },
      // 前台表单验证
      loginRules: {
        username: [{ required: true, trigger: 'blur', message: '用户名不能为空' }, { validator: validateUsername }],
        password: [{ required: true, trigger: 'blur', message: '密码不能为空' }, { validator: validatePassword }]
      },
      loading: false, // 登录按钮loading效果开关
      passwordType: 'password',
      redirect: undefined
    }
  },
  watch: {
    $route: {
      handler: function(route) {
        this.redirect = route.query && route.query.redirect
      },
      immediate: true
    }
  },
  methods: {
    ...mapActions(['user/VueXLogin']),
    showPwd() {
      if (this.passwordType === 'password') {
        this.passwordType = ''
      } else {
        this.passwordType = 'password'
      }
      this.$nextTick(() => {
        this.$refs.password.focus()
      })
    },
    async handleLogin() {
      this.$refs.loginForm.validate(async valid => {
        if (valid) {
          try {
            this.loading = true
            await this['user/VueXLogin']({ username: this.loginForm.username, userpass: this.loginForm.password })
            this.$router.push('/')
          } catch (error) {
            console.log('handleLoginError', error)
          } finally {
            this.loading = false
          }
        } else {
          console.log('error submit!!')
          return false
        }
      })
    }
  }
}
</script>

<style lang="scss">
/* 修复input 背景不协调 和光标变色 */
/* Detail see https://github.com/PanJiaChen/vue-element-admin/pull/927 */

$bg: #283443;
$light_gray: #fff; // 输入框文字颜色
$cursor: #fff; // 输入光标颜色

@supports (-webkit-mask: none) and (not (cater-color: $cursor)) {
  .login-container .el-input input {
    color: $cursor;
  }
}

/* reset element-ui css */
.login-container {
  .el-input {
    display: inline-block;
    height: 47px;
    width: 85%;

    input {
      background: transparent;
      border: 0px;
      -webkit-appearance: none;
      border-radius: 0px;
      padding: 12px 5px 12px 15px;
      color: $light_gray;
      height: 47px;
      caret-color: $cursor;

      &:-webkit-autofill {
        box-shadow: 0 0 0px 1000px $bg inset !important;
        -webkit-text-fill-color: $cursor !important;
      }
    }
  }
  // 背景颜色与边框
  .el-form-item {
    border: 1px solid rgba(255, 255, 255, 0.1);
    background: rgba(0, 0, 0, 0.2);
    border-radius: 5px;
    color: #454545;
  }
  // 错误提示文件
  .el-form-item__error {
    font-size: 14px;
    color: red;
  }
  // 登录按钮
  // .login-bth {
  //   background: #407ffe;
  //   height: 64px;
  //   line-height: 32px;
  //   font-size: 24px;
  // }

  .switch-userid {
    border: none;
    background: none;
  }
}
.el-switch__label {
  color: #c9c9ca;
}
</style>

<style lang="scss" scoped>
$bg: #2d3a4b;
$dark_gray: #889aa4;
$light_gray: #eee;

.login-container {
  min-height: 100%;
  width: 100%;
  background: url(~@/assets/images/login-bg.jpg) center;
  overflow: hidden;

  .login-form {
    position: relative;
    width: 520px;
    max-width: 100%;
    padding: 200px 35px 0;
    margin: 0 auto;
    overflow: hidden;
  }

  .tips {
    font-size: 14px;
    color: #fff;
    margin-bottom: 10px;

    span {
      &:first-of-type {
        margin-right: 16px;
      }
    }
  }

  .svg-container {
    padding: 6px 5px 6px 15px;
    color: $dark_gray;
    vertical-align: middle;
    width: 30px;
    display: inline-block;
  }

  .title-container {
    position: relative;

    .title-cn {
      font-size: 26px;
      color: $light_gray;
      margin: 50px auto 20px auto;
      text-align: center;
      font-weight: bold;
    }
    .title-en {
      font-size: 26px;
      color: $light_gray;
      margin: 20px auto 40px auto;
      text-align: center;
      font-weight: bold;
    }
  }

  .show-pwd {
    position: absolute;
    right: 10px;
    top: 7px;
    font-size: 16px;
    color: $dark_gray;
    cursor: pointer;
    user-select: none;
  }
}
</style>
